Prospects for K+→π+νν‾ observation at CERN in NA62

The main physics goal of the NA62 experiment at CERN is to precisely measure the branching ratio of the Kaon rare decay K+→π+νν‾. This decay is strongly suppressed in the Standard Model. On the other hand its branching ratio is calculated with high accuracy. NA62 is designed to measure the K+→π+νν‾ decay rate with an uncertainty better than 10%. The measurement can serve as a probe to some new physics phenomena, which can alter the decay rate. The NA62 experiment has been successfully launched in October 2014. The theory framework as well as the NA62 detector and the preliminary results are reviewed in this article.